Principal sensory nucleus of trigeminal nerve

Principal sensory nucleus of trigeminal nerve
The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at "V".)
Details
Identifiers
Latinnucleus principalis nervi trigemini
NeuroNames560
TA98A14.1.05.406
TA25932
FMA54533
Anatomical terms of neuroanatomy
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The principal sensory nucleus of trigeminal nerve (or chief sensory nucleus of V, main trigeminal sensory nucleus) is a group of second-order neurons which have cell bodies in the caudal pons.

It receives information about discriminative sensation and light touch of the face as well as conscious proprioception of the jaw via first order neurons of CN V.

  • Most of the sensory information crosses the midline and travels to the contralateral ventral posteromedial nucleus (VPM) of the thalamus via the anterior trigeminothalamic tract.
  • However, information of the oral cavity travels to the ipsilateral VPM of the thalamus via the dorsal trigeminothalamic tract.
  • v
  • t
  • e
Anatomy of the pons
Dorsal/
(tegmentum)
Surface
White: Sensory
White: Motor
Grey: Cranial nuclei
afferent:
efferent:
Grey: Other nuclei
Ventral/
(base)
Grey
White: Motor/descending
Surface
Other grey: Raphe/
reticular
  • v
  • t
  • e
Terminal (CN 0)
Olfactory (CN I)
Optic (CN II)
Oculomotor (CN III)
Trochlear (CN IV)
  • Nucleus
  • Branches
    • no significant branches
Trigeminal (CN V)
Abducens (CN VI)
  • Nucleus
  • Branches
    • no significant branches
Facial (CN VII)
Near origin
Inside
facial canal
At stylomastoid
foramen
Nuclei
Vestibulocochlear (CN VIII)
Glossopharyngeal (CN IX)
Before jugular fossa
After jugular fossa
Nuclei
Vagus (CN X)
Before jugular fossa
After jugular fossa
Neck
Thorax
Abdomen
Nuclei
Accessory (CN XI)
Hypoglossal (CN XII)
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  • Terminologia Anatomica